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Soby Mathew47e43f22016-02-01 14:04:34 +00001/*
Roberto Vargas2b36b152018-02-12 12:36:17 +00002 * Copyright (c) 2016-2018, ARM Limited and Contributors. All rights reserved.
Soby Mathew47e43f22016-02-01 14:04:34 +00003 *
dp-armfa3cf0b2017-05-03 09:38:09 +01004 * SPDX-License-Identifier: BSD-3-Clause
Soby Mathew47e43f22016-02-01 14:04:34 +00005 */
6
7#include <arm_def.h>
Roberto Vargas2b36b152018-02-12 12:36:17 +00008#include <css_pm.h>
Soby Mathew47e43f22016-02-01 14:04:34 +00009#include <plat_arm.h>
Roberto Vargas2b36b152018-02-12 12:36:17 +000010#include <platform.h>
Soby Mathew47e43f22016-02-01 14:04:34 +000011#include "juno_def.h"
12
13/*
14 * On Juno, the system power level is the highest power level.
15 * The first entry in the power domain descriptor specifies the
16 * number of system power domains i.e. 1.
17 */
18#define JUNO_PWR_DOMAINS_AT_MAX_PWR_LVL ARM_SYSTEM_COUNT
19
20/*
21 * The Juno power domain tree descriptor. The cluster power domains
22 * are arranged so that when the PSCI generic code creates the power
23 * domain tree, the indices of the CPU power domain nodes it allocates
24 * match the linear indices returned by plat_core_pos_by_mpidr()
25 * i.e. CLUSTER1 CPUs are allocated indices from 0 to 3 and the higher
26 * indices for CLUSTER0 CPUs.
27 */
Roberto Vargas2b36b152018-02-12 12:36:17 +000028static const unsigned char juno_power_domain_tree_desc[] = {
Soby Mathew47e43f22016-02-01 14:04:34 +000029 /* No of root nodes */
30 JUNO_PWR_DOMAINS_AT_MAX_PWR_LVL,
31 /* No of children for the root node */
32 JUNO_CLUSTER_COUNT,
33 /* No of children for the first cluster node */
34 JUNO_CLUSTER1_CORE_COUNT,
35 /* No of children for the second cluster node */
36 JUNO_CLUSTER0_CORE_COUNT
37};
38
39/*******************************************************************************
40 * This function returns the Juno topology tree information.
41 ******************************************************************************/
42const unsigned char *plat_get_power_domain_tree_desc(void)
43{
44 return juno_power_domain_tree_desc;
45}
46
47/*******************************************************************************
48 * This function returns the core count within the cluster corresponding to
49 * `mpidr`.
50 ******************************************************************************/
51unsigned int plat_arm_get_cluster_core_count(u_register_t mpidr)
52{
53 return (((mpidr) & 0x100) ? JUNO_CLUSTER1_CORE_COUNT :\
54 JUNO_CLUSTER0_CORE_COUNT);
55}
Soby Mathewcbafd7a2016-11-14 12:44:32 +000056
57/*
58 * The array mapping platform core position (implemented by plat_my_core_pos())
59 * to the SCMI power domain ID implemented by SCP.
60 */
61const uint32_t plat_css_core_pos_to_scmi_dmn_id_map[PLATFORM_CORE_COUNT] = {
62 2, 3, 4, 5, 0, 1 };